System for detecting tensile property of calcium silicate plate

Abstract

The invention discloses a system for detecting the tensile property of a calcium silicate plate. The system comprises a machine table, a portal frame is fixedly arranged on the machine table, a lifting driving part is arranged on a crossbeam of the portal frame, a fixed clamping table is arranged on the machine table, a movable clamping table is arranged above the fixed clamping table and is connected with the output part of the lifting driving part, a stretching mechanism is arranged between the fixed clamping table and the movable clamping table, the stretching mechanism comprises two clampswhich are oppositely arranged, the two clamps are arranged on the fixed clamping table and the movable clamping table respectively, and the two clamps clamp the same strip-shaped sample plate. The system has the advantages that the structure is simple and stable, the calcium silicate plate can be continuously loaded, and the strip-shaped sample plate can be prevented from being shorn, brittle, twisted and broken, so that the tensile property of the calcium silicate plate can be detected more accurately and objectively.

Description

technical field [0001] The invention relates to a tensile performance detection system of a board, in particular to a tensile performance detection system of a calcium silicate board. Background technique [0002] As a new prefabricated building material, composite wallboard includes a core layer and surface layers attached to both surfaces of the core layer, so that the composite wallboard has light weight, good thermal insulation performance, fast construction speed, and high installation efficiency. With high advantages, it is widely used in interior partition walls, partition walls, exterior walls and other parts of buildings. However, the surface layer of the composite board is a calcium silicate board, which is a brittle material. In actual use, when the tensile force reaches the ultimate failure strength of the board, brittle failure is prone to occur. This brittle failure is often difficult to predict and occurs suddenly. . [0003] When testing the tensile propert...

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Problems solved by technology

[0004] 1. The surface smoothness and thickness uniformity of the calcium silicate board are not high. The contact area between the calcium silicate board and the clamping steel plate is relatively large, but the fit between the clamping steel plate and the clamping steel plate is not good. The local pressure of the surface layer material is too large, which will cause the clamping part to break or even be crushed, resulting in the inability to effectively and stably clamp;

[0005] 2. When the clamping steel plate is clamped, it cannot be guaranteed that the clamping surface is completely parallel to the stretching direction. Even if there is a slight angle difference, the calcium silicate plate will be subjected to strong shearing action when it is stretched, resulting in shear brittleness. It is difficult to measure the tensile properties of calcium silicate board objectively and accurately;

[0006] 3. The two fixtures are set separately, the clamping surfaces of the two fixtures are difficult to form a coplanar, and the adjustment is time-consuming; in order to solve this problem, the prior art adopts the method of connecting the two fixtures with external activities so that it can be carried out automatically. Adapt to the adjustment; but in the stretching process, there may be uneven force, and the two fixtures will rotate relative to each other (rotate with the stretching direction as the axis), which will make the calcium silicate board Damaged by torsion also affects the stability and reliability of the tensile performance test of calcium silicate board

[0007] 4. When stretching the plate to be tested, the method of hanging heavy objects is used for testing, and there is a lack of more stable, simple structure, low-cost, continuous loading equipment

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